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https://issues.apache.org/jira/browse/HBASE-9769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13796461#comment-13796461
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Vladimir Rodionov commented on HBASE-9769:
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Some additional performance numbers on a patch:
Table: 1 CF + 5 CQ, value ~ 10-15 bytes. Rows = 500000. All data in a block
cache. Tested on *StoreScanner * directly.
Default:
Raw = 1.28M rows per sec
1 CQ in Scan = 0.7M
2 CQ in Scan = 0.5M
3 CQ in Scan = 0.4M
4 CQ in Scan = 0.32M
5 CQ in Scan = 0.33M
Patch:
Raw = 1.28M rows per sec
1 CQ in Scan = 1.27M
2 CQ in Scan = 1.2M
3 CQ in Scan = 1.1M
4 CQ in Scan = 1.05M
5 CQ in Scan = 1M
> Improve performance of a Scanner with explicit column list when rows are
> small/medium size
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-9769
> URL: https://issues.apache.org/jira/browse/HBASE-9769
> Project: HBase
> Issue Type: Improvement
> Components: Scanners
> Affects Versions: 0.98.0, 0.94.12, 0.96.0
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Attachments: 9769-0.94-sample1.txt, 9769-0.94-sample2.txt,
> 9769-0.94-sample.txt, 9769-94.txt
>
>
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